Across
- 3. Intergrowth of two or more crystals in specific orientations, showing changes in interference colors.
- 5. Crystals with well-formed faces, indicating they grew without constraints from surrounding materials.
- 8. Crystals with some well-formed faces but not fully developed.
- 9. Variations in a crystal’s composition from core to rim, often visible as changes in interference colors or extinction angles.
- 10. Large crystals in an igneous rock, surrounded by a finer-grained groundmass.
Down
- 1. Crystals lacking well-formed faces due to growth interference.
- 2. Extinction Variation in extinction angles within a single crystal due to internal strain.
- 4. A property where minerals show different colors or shades when viewed from different angles under polarized light.
- 6. The tendency of minerals to break along specific planes related to their atomic structure.
- 7. Large crystals found in a metamorphic rock matrix.
- 11. The apparent height difference between minerals due to differences in refractive indices.